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Plant Layouts Molecular
Plant Layouts Molecular
DESCRIPTION
| TECHNICAL DATA: |
| Type of Absorbent |
Molecular Sieve Type 13 - X |
| Size of Molecular Sieve |
1.5 mm partite |
| Quantity of air handled |
250 m3/hr. |
| Heating Time |
3 1/2 hours |
| Cooling time |
5 hours |
| Changeover Time |
1 1/2 hours |
| Heating Inlet Temperature |
Min. 250 Deg.C. To Max. 300 Deg.C. |
| Heating Outlet Temperature |
Min. 150 Deg.C. To Max. 170 Deg.C. |
| Cooling Outlet Temperature |
Min. 30 Deg.C. To Max. 50 Deg.C. |
| Main Air Inlet Temperature |
Min. 8 Deg.C. to Max. 20 Deg.C. |
| Air Pressure |
Min. 35 Kgs./cm2 to Max. 60 Kgs./cm2 |
| Max. Permissible Carbon dioxide in Atm.
Air |
0.03% |
| Max. Moisture content |
50 % to 70 % |
| Allowable in Atm. Air relative humidity |
At 15 Deg.C. |
| Heater capacity |
13.5 KW. |
| Heater voltage supply |
440V. |
| Heating individual ammeter reading |
55-60 amps. Each |
Molecular Battery
Each vessel of the Molecular Battery is filled with Molecular Sieve of 1.5 mm.
Type 13-X. As the process air passes through Molecular Sieve the Molecular Sieve
will absorb water vapor and CO2 from the air. After some 10 hours, the Molecular
Sieve becomes saturated, and it will have to be regenerated.
Molecular Sieve Driers
If hot air at low pressure is passed through the saturated Molecular Sieve,
the Molecular Sieve will discharge the CO2 and water vapor and is ready for
use again. The absorbing capacity of the Molecular Sieve drops rapidly if the
process air is warm. Therefore, ensure that the compressed air entering into
the Molecular Sieves below 15 Deg. C. And that the Molecular Sieve is thoroughly
cooled after regeneration, before the process air is passed through it again.
REGENERATION
The waste Nitrogen from the Cold Box is passed through an Electrical Heater
and then passed through the vessel to be regenerated. The temperature at the
inlet of the vessel rises rapidly, while the outlet temperature wills rise very
slowly. If the outlet temperature reaches 170 Deg.C.(For about one hour) the
Molecular Sieve is regenerated. This process is known as the heating cycle,
which will take 2 /3 hours. At this stage, if the inlet temperature exceeds
300 Deg.C. The heater must be put off and put on again after 10 minutes. When
the outlet put off, but the Cold Nitrogen will continue to pass through the
vessel cooling the Molecular Sieve. This process is known as the cooling cycle
which will last about 4 hours. After cooling, the vessel is ready for ,use when
required for purifying the process air.
Oil vapor will destroy the Molecular Sieve and therefore ensure that the carbon
filter is in good condition and the process air is as cool as possible, that
maximum oil and moistures condenses out before the air enters the vessel.
While changing from one vessel to the other, pressurize the vessel very slowly,
by opening the valve A-7 or A-8. It may take half a for the vessel to pressurize.
If the main valves are opened rapidly, the Molecular Sieve may break up, due
to high pressure air propelling the Molecular sieve in the vessel.
When charging fresh Molecular sieve, lower the same slowly through a pipe, so
that it does not break on falling at the bottom.
Most of the Plant operating problems are caused by the carry over of CO2 into
the Cold Box and its blocking the Heat Exchangers. Satisfactory working of the
Molecular Sieve will avert all these problems. Therefore, maintain and operate
this equipment carefully.
Contact us
Mr. Bharat (CEO)
Better Deal Machineries Pvt. Ltd.
UV - 67, Phase - IV, Udyog Vihar, Gurgaon,
Haryana - India - 122001
Phone: +91-124-5519870; +(91)-(124)-4386230
Mobile: +91-9871056668
Fax: +(91)-(124)-4386231
Email: sales@bdmexport.com
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